接上次传图不清晰问题

感觉运行不出来的原因就是传的这几个Label，(个人认为确定不了到底传的是哪个Label，那怎么办呢?)可以写下代码或具体解决方案吗？
#import "ViewController.h"

@interface ViewController ()<UIPickerViewDelegate,UIPickerViewDataSource>{
    NSArray *array_table;
    NSArray *array1;
    NSArray *array2;
    NSArray *array3;
    UIPickerView *pickerView;
   
    NSString *tableNum;
    NSString *mainFood;
    NSString *fruitFood;
    NSString *drinkFood;
}
@property (weak, nonatomic) IBOutlet UIButton *bt_submit;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    array_table=[[NSArray alloc]initWithObjects:@"1",@"2",@"3", nil];
    array1=[[NSArray alloc]initWithObjects:@"米饭",@"面条",@"窝窝", nil];
    array2=[[NSArray alloc]initWithObjects:@"青椒肉丝",@"水晶牛柳",@"娃娃菜", nil];
    array3=[[NSArray alloc]initWithObjects:@"可乐",@"绿茶",@"加多宝",@"开水", nil];
    pickerView=[[UIPickerView alloc]initWithFrame:CGRectMake(0, 0, 414, 200)];
    pickerView.delegate=self;
    pickerView.dataSource=self;
    [self.view addSubview:pickerView];
    UILabel *label1=[[UILabel alloc]initWithFrame:CGRectMake(20, 350, 60, 30)];
    label1.text=@"主食";
    [self.view addSubview:label1];
    label1.textColor=[UIColor blackColor];
    UILabel *label2=[[UILabel alloc]initWithFrame:CGRectMake(20, 410, 60, 30)];
    label2.text=@"主菜";
    [self.view addSubview:label2];
    label2.textColor=[UIColor blackColor];
    UILabel *label3=[[UILabel alloc]initWithFrame:CGRectMake(20, 470, 60, 30)];
    label3.text=@"饮料";
    [self.view addSubview:label3];
    label3.textColor=[UIColor blackColor];
    UILabel *label4=[[UILabel alloc]initWithFrame:CGRectMake(120, 350, 60, 30)];
    //label4.text=mainFood;
    [self.view addSubview:label4];
    UILabel *label5=[[UILabel alloc]initWithFrame:CGRectMake(120, 410, 60, 30)];
   // label5.text=fruitFood;
    [self.view addSubview:label5];
    UILabel *label6=[[UILabel alloc]initWithFrame:CGRectMake(120, 410, 60, 30)];
   // label6.text=drinkFood;
    [self.view addSubview:label6];
   UIButton *bt=[[UIButton alloc]initWithFrame:CGRectMake(70, 250, 60, 50)];
    [bt setTitle:@"点菜" forState:UIControlStateNormal];
    [bt setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
    [bt addTarget:self action:@selector(buttonAction::::) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:bt];
   
   
}

-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
    return 4;
}

-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{
    if(component==0){
        return array_table.count;
    }else if(component==1){
        return array1.count;
    }else if (component==2){
        return array2.count;
    }else if (component==3){
        return array3.count;
    }else{
        return 0;
    }
}
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{
    NSString *str=nil;
    if (component==0){
        str=[array_table objectAtIndex:row];
    }else if(component==1){
        str=[array1 objectAtIndex:row];
    }else if(component==2){
        str=[array2 objectAtIndex:row];
    }else if(component==3){
        str=[array3 objectAtIndex:row];
    }
   
    return str;
}
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{
    if(component==0){
        tableNum=[array_table objectAtIndex:row];
    }else if (component==1){
        mainFood=[array1 objectAtIndex:row];
    }else if (component==2){
        fruitFood=[array2 objectAtIndex:row];
    }else if (component==3){
        drinkFood=[array3 objectAtIndex:row];
    }
}
-(void)buttonAction:(UIButton *)bt1 label:(UILabel *)label4 labe:(UILabel *)label5 label:(UILabel *)label6{
    [bt1 setTitle:[NSString stringWithFormat:@"第%@桌",tableNum] forState:UIControlStateNormal];
    label4.text=mainFood;
    label5.text=fruitFood;
    label6.text=drinkFood;
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end